Find Sum of Each Column (Column-wise Summation) Dry Run in C

Find Sum of Each Column (Column-wise Summation) is an interactive C dry run visualizer from the Two D programs section. Study the source code, then use the execution controls to follow each step, variable update, highlighted line, and console output.

This page provides a browser-based dry run with source-code highlighting, auto-scroll, voice narration controls, and execution output for learning the program step by step.

Find Sum of Each Column (Column-wise Summation) Program Code

#include <stdio.h>
int main() {
    int matrix[3][3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}, j, i;
    
    for(j = 0; j < 3; j++) {
        int colSum = 0;
        for(i = 0; i < 3; i++) {
            colSum += matrix[i][j];
        }
        printf("Sum of column %d = %d\n", j, colSum);
    }
    return 0;
}

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